I downloaded the free trial of a new software called Tableau yesterday. It is one slick tool - you use your excel sheet as the data source and connect Tableau to it. Once done, you can quickly slice, dice and view your data in more ways that you imagine. I was pretty impressed. It costs a thousand bucks, so I am not sure if I'll make the jump yet, but I am a sucker for these kinds of things. Here is what I put together in under 10 minutes - a tool that shows My U.S. Portfolio performance relative to Vanguard's S&P500 index fund. You can use the slider to move the reference start date and then click on the points on the two line charts to get cumulative performance from the reference date.